120 g of an ideal gas of molecular weight 40 g mole–1 are confined to a volume of 20 L at 400 K. The pressure of the gas is- 

 (R=0.0821 L atm K1 mole1)

1. 3.90 atm

2. 4.92 atm

3. 6.02 atm

4. 2.96 atm

Subtopic:  Ideal Gas Law |
 86%
From NCERT
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The volume of 2.8 g of carbon monoxide at 27°C and 0.821 atm pressure is- 

(R=0.0821 lit atm K1 mol1)

1. 0.3 litre

2. 1.5 litre

3. 3 litre

4. 30 litre

Subtopic:  Ideal Gas Law |
 70%
From NCERT
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3.2 g of oxygen  and 0.2 g of hydrogen are placed in a 1.12 litre flask at 0°C.

The total pressure of the gas mixture will be-

1. 1 atm

2. 4 atm

3. 3 atm

4. 2 atm

Subtopic:  Ideal Gas Law |
 73%
From NCERT
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The density of methane at 2.0 atmosphere pressure and 27°C is- 

1. 0.13 gL–1

2. 0.26 gL–1

3. 1.30 gL–1

4. 2.60 gL–1

Subtopic:  Gas Laws |
 73%
From NCERT
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The volume of 0.0168 mol of O2 obtained by decomposition of KClO3 and collected by displacement of water is 428 ml at a pressure of 754 mm Hg at 25°C. The pressure of water vapour at 25°C is- 

1. 18 mm Hg

2. 20 mm Hg

3. 22 mm Hg

4. 24 mm Hg

Subtopic:  Ideal Gas Law |
From NCERT
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The partial pressure of H2 in a flask containing 2 g of H2, 14 g of N2, and 16 g of O2 is-

1. 1/2 of the total pressure

2. 1/3 of the total pressure

3. 1/4 of the total pressure

4. 1/16 of the total pressure

Subtopic:  Dalton's Law |
 79%
From NCERT
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Equal weights of methane and oxygen are mixed in an empty container at 25°C. The fraction of the total pressure exerted by oxygen is- 

1. 1/3

2. 1/2

3. 2/3

4. 13×273298  

Subtopic:  Dalton's Law |
 68%
From NCERT
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In a flask of volume V litres, 0.2 mol of oxygen, 0.4 mol of nitrogen, 0.1 mol of ammonia and 0.3 mol of helium are enclosed at 27oC. If the total pressure exerted by these non-reacting gases is one atmosphere, the partial pressure exerted by nitrogen is-

1. 1 atm

2. 0.1 atm

3. 0.2 atm

4. 0.4 atm

Subtopic:  Dalton's Law |
 79%
From NCERT
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Equal weights of ethane and hydrogen are mixed in an empty container at 25°C. The fraction of the total pressure exerted by hydrogen is- 

1. 1 : 2

2. 1 : 1

3. 1 : 16

4. 15 : 16

Subtopic:  Dalton's Law |
 78%
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A gaseous mixture contains 56 g of N2, 44 g of CO2 and 16 g of CH4. The total pressure of the mixture is 720 mm Hg. The partial pressure of CH4 is-

1. 180 mm

2. 360 mm

3. 540 mm

4. 720 mm

Subtopic:  Dalton's Law |
 81%
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